diff --git a/README.md b/README.md
index d2dc46f..2c7a18c 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,15 @@
-# zigbee_firmware
+# Update Zigbee Firmware
 
-Update Zigbee Firmware
\ No newline at end of file
+## Find your device
+```
+smarthome@raspi:/opt/smarthome/zigbee/cfg/zigbee_firmware $ ls -l /dev/serial/by-id/
+total 0
+lrwxrwxrwx 1 root root 13 Nov  9 14:30 usb-Itead_Sonoff_Zigbee_3.0_USB_Dongle_Plus_V2_a028fc1bda12ef11be6d78b8bf9df066-if00-port0 -> ../../ttyUSB0
+```
+
+## Update your device
+```
+smarthome@raspi:/opt/smarthome/zigbee/cfg/zigbee_firmware $ mkvenv
+smarthome@raspi:/opt/smarthome/zigbee/cfg/zigbee_firmware $ source venv/bin/activate
+smarthome@raspi:/opt/smarthome/zigbee/cfg/zigbee_firmware $ universal-silabs-flasher --device /dev/ttyUSB0 flash --firmware ./raspi.gbl
+```
diff --git a/firmware/zbdonglee_zigbee_ncp_8.0.2.0_sw_flow_115200.gbl b/firmware/zbdonglee_zigbee_ncp_8.0.2.0_sw_flow_115200.gbl
new file mode 100644
index 0000000..543bc13
Binary files /dev/null and b/firmware/zbdonglee_zigbee_ncp_8.0.2.0_sw_flow_115200.gbl differ
diff --git a/raspi.gbl b/raspi.gbl
new file mode 120000
index 0000000..ab01a25
--- /dev/null
+++ b/raspi.gbl
@@ -0,0 +1 @@
+firmware/zbdonglee_zigbee_ncp_8.0.2.0_sw_flow_115200.gbl
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..4ed6be7
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,2 @@
+universal-silabs-flasher
+